Mounting structure of centrifugal fan and grain cooling unit

Abstract

The utility model relates to a mounting structure of a centrifugal fan and a grain cooling unit, and belongs to the technical field of grain cooling equipment. The left side and the right side of the centrifugal fan are respectively matched with a group of locking mechanism through a connecting base to be fixed on a horizontal supporting plate, and each group of locking mechanism comprises a front side bolt connecting assembly and a rear side locking assembly. A guide assembly is arranged between the connecting base and the horizontal supporting plate so that the connecting base can do reciprocating rectilinear motion on the horizontal supporting plate in the front-back direction, the rear side locking assembly comprises a fixed support, a sliding block and a spring, the fixed support is fixedly arranged on the fan supporting frame, the sliding block is arranged on the fixed support in a sliding mode in the front-back direction, and the spring is arranged on the sliding block. A first clamping piece is fixedly arranged at the front end of the sliding block, a second clamping piece is fixedly arranged at the rear end of the connecting base, the first clamping piece and the second clamping piece are in clamping fit, and the spring is in a compressed state. The installation convenience and the installation efficiency of the centrifugal fan can be improved.

Description

Technical Field

[0001] The utility model relates to a centrifugal fan installation structure and a grain cooling unit, belonging to the technical field of grain cooling equipment. Background Art

[0002] The grain cooling unit is a cooling device specially designed for comprehensive analysis of the grain storage environment and climate characteristics. It is an important guarantee for grain storage to achieve green grain storage and scientific grain preservation. The function of the grain cooling unit is to cool and adjust the air humidity, and blow air with a certain temperature and humidity suitable for the characteristics of grain storage into the warehouse to achieve low-temperature storage of grain. In order to prevent the indoor unit from blowing water, the grain cooling unit is currently mainly an integral unit, and the overall unit structure is an indoor unit on the top and an outdoor unit on the bottom. In order to ensure that the grain in the warehouse does not rot or get worms, the grain warehouse needs to be fumigated regularly to kill insects. The fumigation process will produce a large amount of highly toxic gases such as phosphine, which needs to be carried out under closed conditions. To prevent phosphine gas from leaking into the external environment through the air conditioning system, the equipment is required to have airtightness requirements. To meet this requirement, the indoor unit side is changed from the original split panel installation to an integral panel welded together, leaving only the front side panel open to facilitate the installation of internal structural parts. After the installation, the front panel is installed and the surrounding area is sealed by gluing.

[0003] See also Figure 1 The conventional solution of the prior art is as follows: the indoor unit housing includes a housing body with a front opening, a fan support frame is fixedly arranged on the bottom plate of the housing body, the fan support frame includes a horizontal support plate located at the top thereof, and the left and right sides of the centrifugal fan are respectively fixed to the horizontal support plate through a connection base and a set of locking mechanisms, each set of locking mechanisms includes a front bolt connection assembly located on the side close to the front opening and a rear bolt connection assembly located on the side away from the front opening. When the housing body adopts an integral structure fixed by welding, the rear bolt connection assembly has the problem of being difficult to operate and not easy to tighten. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a centrifugal fan installation structure, which can improve the installation convenience and installation efficiency of the centrifugal fan.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is: the installation structure of the centrifugal fan includes an indoor unit casing and a centrifugal fan, the indoor unit casing includes a casing body with a front opening and a front side plate for closing the front opening, a fan support frame is fixedly arranged on the bottom plate of the casing body, the fan support frame includes a horizontal support plate located at the top thereof, the left and right sides of the centrifugal fan are respectively fixed to the horizontal support plate by connecting the base and cooperating with a group of locking mechanisms, each group of locking mechanisms includes a front bolt connection assembly located on the side close to the front opening and a rear locking assembly located on the side away from the front opening, the connection A guide assembly is arranged between the base and the horizontal support plate so that the connecting base can make reciprocating linear motion in the front-to-back direction on the horizontal support plate. The rear locking assembly includes a fixed support, a sliding block and a spring. The fixed support is fixedly arranged on the fan support frame. The sliding block is slidably arranged on the fixed support along the front-to-back direction. The axis of the spring extends along the front-to-back direction. The spring is arranged between the rear end of the sliding block and the fixed support. A first clamping piece is fixedly arranged at the front end of the sliding block. A second clamping piece is fixedly arranged at the rear end of the connecting base. The first clamping piece and the second clamping piece form a clamping fit and make the spring in a compressed state.

[0006] It is further preferred that ear plates are fixedly provided on the left and right sides of the sliding block respectively, a first connecting support plate is fixedly provided on the upper surface of the fixed support in the front area of ​​the ear plate, and a second connecting support plate is fixedly provided in the rear area of ​​the ear plate, the first connecting support plate and the second connecting support plate are connected by a guide bolt, the axis of the guide bolt extends along the front and rear directions, the portion of the guide bolt located between the first connecting support plate and the second connecting support plate is a guide light rod portion, the ear plate has a guide hole for the guide bolt to pass through, a spring is sleeved on the guide bolt, and is provided between the second connecting support plate and the ear plate.

[0007] It is further preferred that the fixed support is fixedly mounted on the horizontal support plate by a bolt connection structure.

[0008] It is further preferred that the second engaging member is an engaging boss; the first engaging member is an engaging groove opening toward the front, the left and right ends of the engaging groove pass through the side end surface of the sliding block, and the front side end surface of the engaging groove is provided with guiding inclined surfaces on the upper and lower sides respectively.

[0009] It is further preferred that the guide assembly includes a slide rail arranged at the bottom of the connection base and a slide groove arranged on the horizontal support plate.

[0010] The utility model also provides a grain cooling unit, comprising an outdoor unit and an indoor unit, wherein the indoor unit is fixedly arranged above the outdoor unit, and the centrifugal fan in the indoor unit is implemented by adopting the installation structure described above.

[0011] It is further preferred that the casing body of the indoor unit casing is an integral structure fixed by welding.

[0012] The beneficial effect of the utility model is that during the specific assembly, it is only necessary to move the connection base of the centrifugal fan toward the rear side along the horizontal support plate, and align the connection holes corresponding to the front bolt connection assembly. At this time, tightening the front bolt connection assembly completes the installation and fixation of the centrifugal fan. The rear area of ​​the centrifugal fan is positioned by the clamping cooperation of the first clamping member and the second clamping member, and is locked by the elastic force of the spring. The connection structure eliminates the fixing bolts between the centrifugal fan and the fan support frame in the rear area of ​​the indoor unit housing, thereby improving the installation convenience and efficiency of the centrifugal fan, and ensuring the reliability of the fixation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of a grain cooling unit in the prior art.

[0014] Figure 2 It is a schematic diagram of the overall structure of the grain cooling unit in the utility model.

[0015] Figure 3 It is a schematic diagram of the installation structure of the centrifugal fan described in the utility model.

[0016] Figure 4 yes Figure 3 Schematic diagram of the explosion structure.

[0017] Figure 5 It is a structural schematic diagram of the fixed support, sliding block, spring and other components in the utility model after being assembled.

[0018] Figure 6 yes Figure 5 Schematic diagram of the explosion structure.

[0019] Figure 7 yes Figure 5 A schematic diagram of the fixed support structure of the embodiment shown in FIG.

[0020] Figure 8 yes Figure 5 A schematic diagram of the sliding block structure of the embodiment shown in FIG.

[0021] Parts markings in the figure: indoor unit housing 10, horizontal support plate 11, slide groove 12, centrifugal fan 20, connecting base 21, slide rail 22, front bolt connection assembly 30, second bolt 31, second nut 32, rear locking assembly 40, fixed support 41, sliding block 42, spring 43, first engaging member 44, second engaging member 45, ear plate 46, first connecting support plate 47, second connecting support plate 48, guide bolt 49, guide inclined surface 410, guide hole 411, bolt through hole 412, mounting hole 413, outdoor unit 50, indoor unit 60, rear bolt connection assembly 70, first bolt 81, first nut 82. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figures 2 to 8 As shown, the installation structure of the centrifugal fan described in the utility model includes an indoor unit housing 10 and a centrifugal fan 20, the indoor unit housing 10 includes a housing body with a front opening and a front side plate for closing the front opening, a fan support frame is fixedly arranged on the bottom plate of the housing body, the fan support frame includes a horizontal support plate 11 located at the top thereof, the left and right sides of the centrifugal fan 20 are respectively fixed to the horizontal support plate 11 by connecting the base 21 and cooperating with a group of locking mechanisms, each group of locking mechanisms includes a front bolt connection assembly 30 (composed of a second bolt 31 and a second nut 32) located on the side close to the front opening and a rear locking assembly 40 away from the side of the front opening, connecting the base 21 and the horizontal support plate 1 1 is provided with a guide assembly so that the connecting base 21 can make a reciprocating linear motion on the horizontal support plate 11 along the front-to-back direction. The rear locking assembly 40 includes a fixed support 41, a sliding block 42 and a spring 43. The fixed support 41 is fixedly provided on the fan support frame. The sliding block 42 is slidably provided on the fixed support 41 along the front-to-back direction. The axis of the spring 43 extends along the front-to-back direction. The spring 43 is provided between the rear end of the sliding block 42 and the fixed support 41. A first engaging member 44 is fixedly provided at the front end of the sliding block 42. A second engaging member 45 is fixedly provided at the rear end of the connecting base 21. The first engaging member 44 and the second engaging member 45 form a snap fit and make the spring 43 in a compressed state.

[0024] Specifically, the fan support frame has no limitation on its external structure, as long as it has a horizontal support plate 11 on its top. Usually, the fan support frame generally includes at least a vertical plate fixedly arranged on the lower surface of the horizontal support plate 11. The fan support frame can adopt an integral structure, or can be arranged one-to-one with the connection base 21.

[0025] There are many ways to connect the fixed support 41 and the sliding block 42, as long as the sliding block 42 can slide in the front-rear direction on the fixed support 41. For example, a guide groove and a guide block can be directly provided between the upper surface of the fixed support 41 and the bottom surface of the sliding block 42. There are also many ways to install the spring 43. For example, the spring 43 can be directly provided between the rear end of the sliding block 42 and the inner end surface of the guide groove.

[0026] In order to make the structure simple, reliable and easy to assemble, the preferred embodiment adopted by the utility model is that ear plates 46 are fixedly provided on the left and right sides of the sliding block 42, respectively, a first connecting support plate 47 is fixedly provided on the upper surface of the fixed support 41 in the front area of ​​the ear plate 46, and a second connecting support plate 48 is fixedly provided in the rear area of ​​the ear plate 46, the first connecting support plate 47 and the second connecting support plate 48 are connected by a guide bolt 49 (that is, the first connecting support plate 47 and the second connecting support plate 48 are both provided with mounting holes 413 matching the guide bolt 49), the axis of the guide bolt 49 extends along the front-to-back direction, the portion of the guide bolt 49 between the first connecting support plate 47 and the second connecting support plate 48 is a guide light rod portion, the ear plate 46 has a guide hole 411 for the guide bolt 49 to pass through, the spring 43 is sleeved on the guide bolt 49, and is provided between the second connecting support plate 48 and the ear plate 46. In some alternative embodiments, the second connecting support plates 48 on both sides may also be designed as an integral piece, and the spring may also be disposed between the rear end surface of the sliding block 42 and the second connecting support plates 48 .

[0027] The fixed support 41 only needs to be fixed at a suitable position of the fan support frame, and the fixing methods include but are not limited to welding, bolt connection and fixing, etc. In order to make the structure simple and reliable, and easy to assemble, the preferred embodiment adopted by the utility model is that the fixed support 41 is fixedly installed on the horizontal support plate 11 through a bolt connection structure, and the bolt connection structure includes the first bolt 81 and the first nut 82 shown in the figure, and the fixed support 41 has a bolt through hole 412 corresponding thereto.

[0028] In order to make the structure simple, reliable, and easy to assemble, the preferred embodiment adopted by the utility model is that the second engaging member 45 is an engaging boss; the first engaging member 44 is an engaging groove with an opening toward the front side, the left and right ends of the engaging groove penetrate the side end surface of the sliding block 42, and the front end surface of the engaging groove is provided with guiding inclined surfaces 410 on the upper and lower sides. It can be understood that in some alternative embodiments, the second engaging member 45 can also be designed as a groove form, and the first engaging member 44 can be designed as a boss form, as long as when the connecting base 21 of the centrifugal fan 20 moves toward the rear side along the horizontal support plate 11, the first engaging member 44 and the second engaging member 45 can form a snap fit.

[0029] The guide assembly between the connecting base 21 and the horizontal support plate 11 can be implemented in a variety of ways, for example, it can be a guide block matched with a guide rail, a guide wheel matched with a guide rail, a slide rail matched with a slide groove, etc. In order to make the structure simple and reliable, and easy to assemble, the preferred embodiment adopted by the utility model is that the guide assembly includes a slide rail 22 provided at the bottom of the connecting base 21 and a slide groove 12 provided on the horizontal support plate 11.

[0030] The utility model also provides a grain cooling unit, including an outdoor unit 50 and an indoor unit 60, wherein the indoor unit 60 is fixedly arranged above the outdoor unit 50, and the centrifugal fan in the indoor unit 60 is implemented by adopting the installation structure described above. It can be understood that the key point of the utility model lies in the installation structure of the centrifugal fan, and the specific structural part of the grain cooling unit not described in detail in the utility model can be implemented with reference to the prior art.

[0031] The installation structure of the centrifugal fan described in the utility model is also applicable to the split panel installation method mentioned in the background technology part, but it is only applicable when the shell body of the indoor unit shell 10 is an integral structure fixed by welding, which can achieve a more prominent technical effect.

[0032] During the specific assembly of the utility model, it is only necessary to move the connection base 21 of the centrifugal fan 20 toward the rear side along the horizontal support plate 11, and align the corresponding connection holes of the front bolt connection assembly 30. At this time, tightening the front bolt connection assembly 30 completes the installation and fixation of the centrifugal fan 20. The rear area of ​​the centrifugal fan 20 is positioned by the snap-fitting of the first snap-fit ​​member 44 and the second snap-fit ​​member 45, and is locked by the elastic force of the spring 43. This connection structure eliminates the fixing bolts between the centrifugal fan 20 and the fan support frame in the rear area of ​​the indoor unit housing 10, thereby improving the installation convenience and efficiency of the centrifugal fan 20, and ensuring the reliability of the fixation.

Claims

1. A centrifugal fan installation structure, comprising an indoor unit housing (10) and a centrifugal fan (20), wherein the indoor unit housing (10) comprises a housing body having a front opening and a front side plate for closing the front opening, a fan support frame is fixedly arranged on the bottom plate of the housing body, the fan support frame comprises a horizontal support plate (11) located at the top end thereof, and the left and right sides of the centrifugal fan (20) are respectively fixed to the horizontal support plate (11) through a connecting base (21) and a group of locking mechanisms, each group of locking mechanisms comprises a front side bolt connection assembly (30) located on a side close to the front opening and a rear side locking assembly (40) located on a side away from the front opening, characterized in that: A guide assembly is provided between the connecting base (21) and the horizontal support plate (11) so that the connecting base (21) can perform reciprocating linear motion on the horizontal support plate (11) in the front-to-back direction. The rear locking assembly (40) comprises a fixed support (41), a sliding block (42) and a spring (43). The fixed support (41) is fixedly provided on the fan support frame. The sliding block (42) is slidably provided on the fixed support (41) in the front-to-back direction. The axis of the spring (43) extends in the front-to-back direction. The spring (43) is provided between the rear end of the sliding block (42) and the fixed support (41). A first engaging member (44) is fixedly provided at the front end of the sliding block (42). A second engaging member (45) is fixedly provided at the rear end of the connecting base (21). The first engaging member (44) and the second engaging member (45) form a snap fit and the spring (43) is in a compressed state.

2. The installation structure of the centrifugal fan according to claim 1, characterized in that: The left and right sides of the sliding block (42) are respectively fixedly provided with ear plates (46); the upper surface of the fixed support (41) is fixedly provided with a first connecting support plate (47) in the front area of ​​the ear plate (46); the second connecting support plate (48) is fixedly provided in the rear area of ​​the ear plate (46); the first connecting support plate (47) and the second connecting support plate (48) are connected by a guide bolt (49); the axis of the guide bolt (49) extends in the front-rear direction; the portion of the guide bolt (49) between the first connecting support plate (47) and the second connecting support plate (48) is a guide light rod portion; the ear plate (46) has a guide hole (411) for the guide bolt (49) to pass through; the spring (43) is sleeved on the guide bolt (49) and is provided between the second connecting support plate (48) and the ear plate (46).

3. The installation structure of the centrifugal fan according to claim 1, characterized in that: The fixed support (41) is fixedly mounted on the horizontal support plate (11) via a bolt connection structure.

4. The installation structure of the centrifugal fan according to claim 1, characterized in that: The second engaging member (45) is an engaging boss; the first engaging member (44) is an engaging groove with its opening facing the front side, the left and right ends of the engaging groove penetrate the side end surface of the sliding block (42), and the front side end surface of the engaging groove is provided with guiding inclined surfaces (410) on the upper and lower sides respectively.

5. The installation structure of a centrifugal fan according to any one of claims 1 to 4, characterized in that: The guide assembly comprises a slide rail (22) arranged at the bottom of the connection base (21) and a slide groove (12) arranged on the horizontal support plate (11).

6. A grain cooling unit, comprising an outdoor unit (50) and an indoor unit (60), wherein the indoor unit (60) is fixedly arranged above the outdoor unit (50), and characterized in that: The indoor unit (60) has a centrifugal fan installation structure as claimed in any one of claims 1 to 5.

7. The grain cooling unit according to claim 6, characterized in that: The shell body of the indoor unit shell (10) is an integral structure fixed by welding.

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